October, 196Z new information mailed to: E/1139/DB; C/330-334/AD
power chcuit breakers
Westinghouse high power laboratory
a a &: � !# s.� ;,i�!!'"""':!l'••l@<�•-'"'1¢ll''''''l>"''"'�"�
complete testing facilities for the development of electric utility equipment
technical data
33-065
page 1
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page 2
ldgh powel' lalloi'AIOI')"
plan
control building
'
surge set
test ..-----f cell high I current
cell
test cell 2
test cell 2a
test cell 3
station I generators I and 2
high voltage outdoor structure
test cell .3a
test cell 4 station 2
generators II and 12
application
The Westinghouse high power laboratory is a complete, modern installation
equipped for observing electrical apparatus operating in short circuit situations, with actual fault conditions� simulated. Since 1925 the laboratory, continually expanded, has been the proving ground for development and verification of new designs for future, as well as existing, demands of electric utility
systems.
The efficiency and scope of the high power laboratory facilities cut testing time to a minimum on all equipment from the smallest, 600 volt and below, through
the largest power equipment used at the highest transmission voltages. In
creased variety of tests, improved instrumentation, and efficient assembly line
methods of handling apparatus make possible economical testing, and econom
ical equipment design.
In addition to verifying power circuit breaker designs, tests in the high power
laboratory assure superior performance and complete dependability in all
Westinghouse products including:
arresters capacitors
disconnecting switches insulators
fuses reactors switchgear transformers
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Westinghouse
high power laboratory
technical data 33-065
complete testing facilities for the development of electric utility equipment page 3
schematic
generator
station 3 t;\.-\.::_J sta� -delta switch
variable current limiting reactor
0-station 2
@-
station I 8-0-
back- up and by- pass breakers
capabilities table I
test circuit
single phase through transformers
three phase through transformers
three phase at 13.2 kv A.
three phase at 16.5 kv+
single phase at 13.2 kv A.
single phase at 16.5 kv+
A No provision made for paralleling at generator voltages.
circuit selectors
high current � bank
maximum mva
station 2 station 3
1000 1500
1700 1500
2500
900 3000
1250
560 1500
+ Usin9 slalion 2 <>I 22 kv connection throu9h transformers; underexciting to 16.5 kv,
cell 2
cell 2a
high current cell
cell 3
cell 3a
cell 4
cell I
combined
2500
3200
3900
2060
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genel'atiag equipment
In station 3, above, there is a 3600 rpm generator with a capability of 3000 mva at 16.5 kv.
Station 1 has a two-unit generating set driven by a wound rotor motor. The exciters are separately driven. This station has a short circuit capability of 500 mva and is convenient and economical for testing smaller apparatus.
The two 514 rpm generator sets in station 2 have a combined output of 2500 mva at 13.2 kv.
l'eactol's
Switched reactors, remotely operated from the control room,
are used to control test current values.
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c
c
Westinghouse technical data
high power laboratory 33-065
complete testing facilities for the development of electric utility equipment page 5
high voltage eqaipmeat transformers
At station 3 are three single phase transformers, each rated
at 500,000 kva short circuit capacity. These transformers are used by themselves or in conjunction with the six transformers in station 2 for a wide variety of voltage combinations, as shown in tables II and III.
Insulation to ground for one bank of transformers at station 2 is 132 kv, and 196 kv for the other bank. Transformers at
station 3 are insulated for 286 kv to ground.
biased single phase tests
genera for 'II
E() t
22kv l
generator 12
EID t
22kv l
t 22kv
I
I 132kv
IIOkv
132kv
test break
Special test connections for increasing voltage at tank point "x", to demonstrate insulation strength during high power insulation test.
Oscillogram of high power interrupting test at 22 kv, with 132 kv maintained for several seconds between one terminal and ground by circuit above.
kv
I mva capacities
station 2 I station 3 I combined
table II: single phase voltage combinationse
22 44 66
88 110 132 154 176 198 220 264
352
396
462 572
1000
1000 1000 1000
1000
1000
1000
1000
1500 2500
1500 2500
1500 2500
1500 2500
2500
1500 2500
2350
2000 2250 2500
1500 2500
2000 2250 2350 1425
table Ill: three phase voltage combinations
22@ 1700 1500 3200 38/\ 1700 1500 3200 44@ 1700 1500 3200 66@ 1700
766 1700 1500 3200 88@ 1700 1500 3200
1156 1700
132@ 1700
1546 1700 1500 3200 2306 1700
3456 1275
4956 1830
e All voltages 154 kv and above are made with mid-point grounded
� delta connection ,6, wye connection
/trip enerolzed
l .. �l 35,100-omperes
\_lift rod travel
/22 kv test vottooe
/132 kv voltage to QI'Ound
-46 psi tank pr11sure
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page 6
test ceU
Two test cells in station 3, one
for tests at transformer voltages, the other for tests at 16.5 kv generator voltage, form a semicircle with test cells of the other stations, facing the control room. The generators, transformers and control of stations 2 and 3 are arranged so that their combined capacity can be directed to station 3 test cells. All three stations can be operated separately with independent tests conducted.
sea"vice al'ea
A service and repair shop, equipped with a railroad spur
and twenty ton crane, is con
veniently located adjacent to the
test area. Changes, repairs or
adjustments to equipment are
made with a minimum loss of time.
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Westinghouse high powel' labol'atol'y
technical data 33-065
complete testing facilities for the development of electric utility equipment page 7
aont:rol
The central control room is equipped with the latest Westinghouse control desks, with modern cathode ray and magnetic oscillographs. From this room switches for the reactor groups are remotely controlled,
while an analog computer device checks the choice of reactor settings
prior to application of fault current to test sample.
digital sequence timer patch board
analog computer with control panel for determining test current reactor settings
main control desk with test cells in background control room instrumentation panels and oscillograph tables
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technical data 33-065 page 8 Westinghouse
high power laboratory
Capacitors at station 3 for testing up to approximately 100,000 kvar isolated, or 50,000 kvar back-to-back,
high c:al'l'ent test c:eD
transformers
A bank of low-voltage high-current transformers provides for current carrying tests. These transformers giving open-circuit voltages of 625, 1250, 2500 and 5000 volts are located in the high-cur
rent test cell. On the 625-volt connection they are suitable for five-second tests at 200,000 am
peres, three-phase or 345,000 amperes single
phase. At these currents the terminal voltage
drops less than 50 per cent.
cold room
Tests under severe sleet and low temperature conditions are made in the cold room, where temperatures of - 40°F, even in midsummer, can be obtained. At right, testing the V-2 discon
necting switch under heavy icing conditions.
Westinghouse Electric Corporation
Power Circuit Breaker Division • Trafford, Pa. printed in U.S.A.
and for simulating unloaded transmission lines up to roughly 500 miles at 345 kv.
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Page 2
A pplication The Westinghouse high power laboratory is a complete, modern installation equipped for observing electrical apparatus operating in short circuit situations, with actual fault conditions simulated. Since 1925 the laboratory, continually expanded, has been the proving ground for development and verification of new designs for future, as well as existing, demands of electric utility systems.
The efficiency and scope of the high power laboratory facilities cut testing time to a minimum on all equipment from the smallest, 600 volt and below, through the largest power equipment used at the highest transmission voltages. Increased variety of tests, improved instrumentation, and efficient methods of handling apparatus make possible economical testing, and economical equipment design.
High Power Laboratory Pl an
Control Building
In addition to verifying power circuit breaker designs, tests in the high power laboratory may be made to prove the performance of a variety of electrical apparatus including:
Arresters Capacitors Disconnecting Switches Fuses Insulators Reactors Switchgear Transformers
The laboratory facilities are available to companies outside Westinghouse as well as all Westinghouse Divisions. Test results are available only to laboratory users and are kept strictly confidential.
Surge Set
D
High Current Cell
TestCell2
TestCel12a
TestCell3
Test Cell 3a
Test Cell4
Test Celll
Statianl Generators land 2
High Voltage Outdoor Structure
Station 2 Generators 11 and 12
0
0
0
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Schematic
Star-Delta
Generator SwitCh
Stallan3 �
Station 2
Back-Up and By-Pass Breakers
Variable Current
Capabilities Table I
Test Circuit
Single Phase Through Transformers Three Phase Through Transformers Three Phase at 13.2 Kv<D Three Phase at 16.5 Kv® Single Phase at 13.2 Kv<D Single Phase at 16.5 Kv®
33-065 TWE A Technical Data
Page 3
Clrcu1t Selectors
Transformer
Capacitor
� Area
j Cell2
\'-----+----_J
'--------Cell 2a
High
\ ;E Current Bank '---_,�,._--------High Current Cell
,-----Cell 3
t--+-----------+-----Cell3a
'------- Cell4
.._ _______________ Celll
Maximum Mva
Station 2
1000 1700 2500
900 1250
560
Station 3
1500 1500
3000
1500
Combined
2500 3200
3900
2060
(j) No provision made for paralleling at generator voltages. ®Using station 2 at 22 kv connection through transformers; underexciting to 16.5 kv.
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Page 4
Generating Equipment
In station 3, above, there is a 3600 rpm generator with a capability of 3000 mva at 16.5 kv.
Station 1 has a two-unit generating set driven by a wound rotor motor. The exciters are separately driven. This station has a short circuit capability of 500 mva and is convenient and economical for testing smaller apparatus.
The two 514 rpm generator sets in station 2 have a combined output of 2500 mva at 13.2 kv.
Reactors
Switched reactors, remotely operated from the control room, are used to control test cur-rent values.
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High Voltage Equipment
Transformers
At station 3 are three single phase transformers, each rated at 500,000 kva short circuit capacity. These transformers are used by themselves or in conjunction with the six transformers in station 2 for a wide variety of voltage combinations, as shown in tables I I and Ill.
Biased Single Phase Tests
Generator 11
€() � Generator12
� � Generator 31
Insulation to ground for one bank of transformers at station 2 is 132 kv, and 1 96 kv for the other bank. Transformers at station 3 are insulated for 286 kv to ground.
A Weil- Dobke current injection synthetic test facility is available which effectively multiplies the short-circuit capacity of Stations No. 2 and 3 combined by a factor of ten.
l32Kv l32Kv
llOKv
X
Above special test connections for increasing voltage at tank point "x", to demonstrate insulation strength during high power insulation test.
33-065 TWE A Technical Data
Page 5
Capabilities, Continued
Kv I Mva Capacities
Station 2 I Station 3
Table II: Single Phase Voltage Combination<D
22 1000 1500 44 1000 1500 66 1000 1500 88 1000 1500
110 132 1000 1500 154 176 198 1000 220 264 1000 1500 352 396 1000 462 572
Table Ill: Three Phase Voltage Combinations
22® 1700 1500 38@ 1700 1500 44® 1700 1500 66® 1700 76@ 1700 1500 88® 1700 1500
115@ 1700 132® 1700 154@ 1700 1500 230@ 1700 345@ 1275 495@
Combined
2500 2500 2500 2500 2500 2500 2350 2000 2250 2500 2500 2000 2250 2350 1425
3200 3200 3200
3200 3200
3200
1830
<D All voltages 154 kv and above are made with midpoint grounded.
@ Delta connection. @ Wye connection.
�Trip Energized Lift Rod Travel
J 22 Kv Test Voltoge
j I� 35,100 Amperes
132 Kv Voltage to Ground
I
� 46 Psi Tank Pressure
Oscillogram of high power interrupting test at 22 kv, with 132 kv maintained for several seconds between one terminal and ground by circuit above. www .
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�. .a r
Test Cells
Test cells for stations 3, 1 and 2 are shown left to right as viewed from the control room. Cells are provided to test both at generator voltages up to 16.5 Kv, and at transformer voltages up to 572 Kv. Connections are arranged so that the combined capacity of stations 2 and 3 can be directed to station 3 test cells. All three stations may be operated separately to conduct independent tests.
Service A rea
A service and repair shop, equipped with a railroad spur and twenty ton crane, is conveniently located adjacent to the test area. Changes, repairs or adjustments to equipment are made with a minimum loss of time.
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Control s
The central control room is equipped with the latest Westinghouse control desks, with modern cathode ray and magnetic oscillographs. From this room switches for the reactor groups are remotely controlled, while the choice of reactor settings is verified on the mimic bus on the control panel. Also included are electronic sequence timers for splitcycle test control, and computer-type storage oscilloscopes.
Generator Control Desk
33-065 TWEA Technical Data
Page 7
Oscillograph Tables
Station 3 Control Room
Reactor Control Desk for Selecting Short Circuit Currents www .
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33-065 TWEA Technical Data
Page 8
Capacitor Bank
Capacitors at station 3 are for testing up to approximately 150,000 kvar isolated, or 75,000 kvar back-to-back, and for simulating unloaded transmission lines up to roughly 500 miles at 345 kv.
High Current Test Cell Transformers
A bank of low-voltage high-current transformers provides for current carrying tests. These transformers, giving open-circuit voltages of 625, 1250, 2500 and 5000 volts, are located in the high-current test cell. On the 625-volt connection, they are suitable for tests at 200,000 amperes, either single phase or three-phase.
Cold Room
Tests under severe sleet and low temperature conditions are made in the cold room, where temperatures of - 35'F, even in midsummer, can be obtained. At right the V-2 disconnecting switch is being tested under heavy icing conditions.
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